-wentzel



c. E.'WENTZEL. CLOSURE FOR PRESSURE CHAMBERS.

APPLICATION FILED MAR- 6119K).

2 SHEETS-SHEET I.

IQHZ.

ATTQQNEY c. E. WENTZEL. CLOSURE FOR PRESSURE CHAMBERS. APPLICATION FILEDMAR. 6, 1915.

- 1,1 94,798. Patnted Aug. 15,1916.

2 SHEETS-SHEET 2. 3'5

A 77 OPZYEK TINIE STATE PTEET CLIFFORD E. \VENTZEL, OF CINCINNATI, OHIO,ASSIGNOR TO THE BAI-IMANN IRON WORKS COMPANY, 013 CINCINNATI, OHIO, ACORPORATION OF OHIO.

CLOSURE FOR PRESSURE-CHAMBERS.

Application filed March 6,

To all whom it may concern:

Be it known that I, CLIFFORD E. WVnN'rznL, a citizen of the UnitedStates, and a resident of Cincinnati, inthe county of Hamilton and Stateof Ohio, have invented certain new and useful Improvements in Closuresfor Pressure-Chambers, of which the following is a specification.

My invention relates to fluid pressure governing or operating means formachines, such as presses, and especially such as mills for expressingjuice from cane, as used inthe manufacture of sugar.

The object of my invention is to provide improved construction ofdevices of this character whereby the pressure chamber is more readilyopened for renewing packing means and making other renewals or repairswithin said chamber; and which construction at the same time, may bemade amply strong to carry the heavy load imposed upon it.

My invention consists in the combination of parts and in the details ofconstruction and arrangement of parts as will hereinafter be more fullydescribed and claimed. 7

In the drawings: Figure 1 is a side elevation of a cane mill providedwith my invention; Fig. 2 is a detail side elevation of the shear bar;Fig. 3 is an end elevation of the same; Fig. 1 is an enlarged sectionalview of the top cap on a line corresponding to the line yg of Fig. 5;and Fig. 5 is an elongated vertical cross section of the top of the capon the line a2-w of Fig. 1.

The cane mill in connection with which I exemplify my invention has thetwo lower rolls 1 and 2 held positively against horizontal separation bybolts 3 and 1, above and below the bearings of the rolls 1 and 2, andthe upper roll 5, which has a journal 6, downward upon which bears thejournal box 7 adapted to slide up and down in the upper part 8 of theframe of the machine, and having a pressure plate 9 on its top, with aswivel plate 10 hearing againsta concave surface on the top of thepressure plate 9. The lower end of the plunger 11 bears downward orinward against the fiat top of this swivel plate 10, and is fitted inthe lower or inner end of the bore of the cylinder 12, which cylinderforms an integral part of the top cap 13. This top cap is held downonthe top 8 of the frame by upright bolts 14:

Specification of Letters Patent.

1915. Serial No. 12,677.

at opposite sides of the journal 6 and of said cylinder 12.

The lower or inner part of the bore of the cylinder 12 is reduced,forming an annular shoulder 12. The plunger 11 has a reduced partfitting closely in the reduced part of the cylinder and having around itan annular shoulder 11, above which is a packing 15 of upwardly oroutwardly opening U-shaped cross section between said plunger and thewalls of the lower or inner end of the main and larger part of the boreof the cylinder. The shoulder 11 rests on the shoulder 12 and relievesthe rolls and journal boxes from hydraulic pressure when running idle.

Immediately above the plunger 11, as here shown, is the inlet connection16 through which fluid pressure, in this example hydraulic pressure, isapplied in the device. A resisting plug 17 is closely fitted in the boreof the cylinder 12 with a lower or inner reduced part 18, around whichreduced part 18 is another annular packing 19 of downwardly or inwardlyopening U-shaped cross section. Thus, if this resisting plug 17 is heldin the bore of the cylinder, a pressure chamber 20 is inclosed, with theinlet connection 16 leading into it; and this chamber is made proofagainst leakage around the plunger 11 and resistance plug 17 by thepackings l5 and 19.

Since the packings 15 and 19 must be kept in perfect condition andtherefore require renewal or repairs at intervals, it is highlydesirable that convenient access to this pressure chamber 20 be possibleat any time. In most applications of such devices, as in the presentexample, access by removal of the plunger involves considerabledisassembly of heavy and important parts of the machine on which thedevice is used, making it desirable to gain access through the head orclosure of the cylinder. ()wing to the ex tremely heavy strains whichsuch a device as this must withstand however, it is necessary that thecylinder closing parts be massive, and that any means that fastens themtogether must be a secure one, while for facili- 'tating the accessabove alluded to, such fastening means must be capable of readyunfastening.

As shown in the present example, I provide for the above access bymaking the resisting plug 17 removable from the upper or outer end ofthe bore of the cylinder, and provide a secure fastening means bypassing a shear bar 21 horizontally through openings 22 in the cylinderwalls and through a transverse opening 23 through the resisting plug 17.

A supporting plate 2% is placed over the upper or outer end of the boreof the cylinder 12, and an eye bolt 25 passes loosely through thesupporting plate 2% and is screwed into the outer end or top of the resisting plug 17 to project into the transverse opening 23 in said plugand engage with the shear bar 21, which preferably has a depression 26in its middle to receive the inner end of this eye bolt A nut 27 on theeye bolt 25 bears against the outer side of the supporting plate 24 tohold the re sisting plug 17 out toward the outer end of the cylinder.

As herein shown, the shear bar 21 is of substantially rectangular crosssection, and the openings 22 in the cylinder walls and the opening 23 inthe resisting plug are of corresponding cross section. However, thedimension of each of these openings in the direction of shear issomewhat greater than the corresponding dimension of the shear bar, sothat the shear bar fits these openings loosely in this direction exceptwhen the eye bolt 25 is screwed in against the shear bar, which willdraw the resisting plug upward or outward and bring the inner side ofthe opening 23 therein out against the inner side of the shear bar whereit extends across the bore of the cylinder, and by the bearing of thenut 27 on the outer side of the supporting plate 24 this resisting plug17 and shear bar 21 are drawn out so that the outer sides of the shearbar bear outward against the outer sides of the openings 22 in thecylinder walls," where the end parts of the shear ban extend laterallytherethrough. With the end of the eye bolt 25 bearing in the depression26 in the middle of the outer side of the shear bar, this shear bar willbe held against endwise displacement laterally from the resisting plugand cylinder walls. IVith this arrangement, which is extremely simple,all of the parts may be made amply massive and strong to resist thestrains imposed upon them. At the same time, if it be required to removethe resisting plug 17 from the cylinder 12, it is necessary only toloosen the nut 27 and screw the eye bolt 25 upward in the resisting plug17, which will allow the resisting plug 17 to drop down somewhat,bringing the bottom of this opening 23 down and thus allowing the shearbar 21 to drop down from the upper sides of the openings 22 in thecylinder walls, and disengaging the lower end of the eye bolt 25 fromthe depression 26. Thus the shear bar 21 is readily pushed endwise fromits position far enough to have its end part seized made as may bedesirable cylinder, giving access to the packings 15' and 19 and to theupper end of the plunger 11, as well as to the lower end of saidresisting plug 17; and of course the plunger 11 may be reached andcompletely with drawn from the cylinder if required If extensive work isto be done on either the plunger or the resisting plug, or in renewingthe packings' 15 and 19, and it be desired to use the mill during thistime, suitable blocking means may be inserted above the block 7 and theparts 9 and 10 in place of this plunger and plug and the shear bar 21inserted to hold them down, thus allowing positive operation of themachine during this time, it being understood that such positiveoperation is permissible, although, for the most safe working of themachine, the governing fluid pressure provided in the pressure chamberis highly necessary.

I prefer to provide the single pin 21 of ample cross section to resistthe strain, and to have the eye bolt 25 bear down on this pin, with theadvantage that the resisting plug is held firmly upward whether thefluid pressure be present in the chamber 20 or not. However, it will beunderstood that such variations of my invention may be under variousconditions met with, and that while I have shown and specificallydescribed a preferred construction as an example of the embodiment of myinvention, I do not wish to be understood as limiting myself to theexample shown, but 7 What I claim as new and desire to secure by LettersPatent is:

1. In a device of the character described, in combination with acylinder and plunger in said cylinder, a resisting plug in the cylinder,said plunger and said plug and the walls of the cylinder inclosing apressure chamber and said chamber having an inlet,

and means slidable transversely of the cylinder to engage with saidresisting plug and hold it toward said plunger.

2. In a device of the character described, in combination with acylinder and a plunger in said cylinder, a resisting plug in saidcylinder, said plunger and said resist-ing plug and the walls of thecylinder inclosing a pressure chamber, andsaid pressure chamber havingan inlet, and fastening means slidable through a wall of said cylinderand across and in engagement with said resisting plug to hold the plugtoward said plunger.

In a device of the character described, in combination with a cylinderand a plunger in said cylinder, a resisting plug in said cylinder, saidplunger and said resisting plug and the walls of the cylinder inclosinga p *essure chamber, and said pressure chamber having an inlet, and ashear bar engaging with a wall of said cylinder and in engagement withsaid resisting plug to hold the plug toward said plunger.

4. In a device of the character described, in combination with a fixedcylinder and a plunger in said cylinder, a resisting plug in saidcylinder, said plunger and said resisting plug and the walls of thecylinder inclosing a pressure chamber, and said pressure chamber havingan inlet, and fastening means slidable transversely of said cylinder,and across and in engagement with said. resisting plug to hold the plugtoward said plunger.

5. In a device of the character described, in combination with a fixedcylinder and a plunger in said cylinder, a resisting plug in saidcylinder, said plunger and said resisting plug and the walls of thecylinder inclosing a pressure chamber, and said pressure chamber havingan inlet, and a shear bar slidable transversely through a wall of saidcylinder from its exterior, and across and in engagement with saidresisting plug to hold the plug toward said plunger.

6. In a device of the character described, in combination with acylinder and a plunger in said cylinder, a resisting plug in saidcylinder, said plunger and said resisting plug and the walls of thecylinder inclosing a pressure chamber, and said pressure chamber havingan inlet, and an iinperforate shear bar engaging with a wall of saidcylinder and in engagement with said resisting plug to hold the plugtoward said plunger.

7. In a device of the character described, in combination with a fixedcylinder and a plunger in said cylinder, a resisting plug in saidcylinder, said plunger and said resisting plug and the walls of thecylinder inclosing a pressure chamber, and said pressure chamber havingan inlet, and an imperforate shear bar slidable transversely through awall of said cylinder from its ere terior and across and in engagementwith said resisting plug to hold the plug toward said plunger.

8. in a device of the character described,

in combination with a cylinder and a plunger in said cylinder, aresisting plug in the cylinder, said plunger and said plug and the wallsof the cylinder inclosing a pressure chamber, and said pressure chamberhaving an inlet, means slidable transversely of the cylinder to engagewith said resisting plug and hold it toward said plunger, and meansengaging with said resisting plug to hold it against said slidablemeans.

9. In a device of the character described, in combination with acylinder and a plunger in said cylinder, a resisting plug in thecylinder, said plunger and said plug and the walls of the cylinderinclosing a pressure chamber, and said pressure chamber having an inlet,means slidable transversely of the cylinder to engage with saidresisting plug and hold it toward said plunger, and means engaging withsaid resisting plug to hold it against said slidable means, and engagingagainst said slidable means to prevent sliding of the means away fromits position across said resisting plug.

10. In a device of the character described, in combination with acylinder and a plunger therein, a resisting plug in said cylinder, saidplunger and said resisting plug and the walls of the cylinder inclosinga pressure chamber, and said cylinder having an inlet to said pressurechamber, fastening means slidable through one of the walls of saidcylinder and across and in engagement with said resisting plug to holdthe plug toward said plunger, and means holding said resisting plugagainst said fastening means independently of the pressure in thepressure chamber.

11. In a device of the character described, in combination with acylinder and a plunger therein, a resisting plug in said cylinder, saidplunger and said resisting plug and the walls of the cylinder inclosinga pressure chamber, and said cylinder having an inlet to said pressurechamber, fastenin means slidable through one of the walls or saidcylinder and across and in engagement with said resisting plug to holdthe plug toward said plunger, and means holding said resisting plugagainst said fastening means independently of the pressure in thepressure chamber, said means engaging against said fastening means toprevent said fastening means from sliding from said cylinder and fromacross said resisting plug.

12. In a device of the character described, in combination with acylinder and a plunger therein, a resisting plug in said cylinderinclosing between it and said plunger and the walls of the cylinder atpressure chamber, said cylinder having a fluid pressure inlet to saidpressure chamber, a shear bar engaging with the walls of the cylinderand extending across and engaging with said resisting plug to hold ittoward said plunger, supporting means at the outer end of the cylinder,and a tension element engaging "ith the supporting means and saidresisting plug.

13. In a device of the character described, in combination with acylinder and a plunger therein, a resisting plug in said cylinderinclosing between it and said plunger and the walls of the cylinder apressure chainbcr, said cylinderhavlng a fluid pressure inlet to saidpressure chamber, a shear bar engaging with the walls of the cylinderand extending across and engaging with said resisting plug to hold ittoward said plunger, supporting means across the outer end of thecylinder, and tension means engaging with said supporting means and withsaid resisting plug, and comprising means for engagement to lift saidresisting plug and the supporting means outwardly of said cylinder whensaid shear bar is removed from the above described position.

1%. In a device of the character described, in combination with acylinder and a plunger therein, a resisting plug in said cylinderinclosing between it and said plunger and the walls of the cylinder apressure chamher, said cylinder having a fluid pressure inlet to saidpressure chamber, a shear bar engaging with the walls of the cylinderand extending across and engaging with said resisting plug to hold ittoward said plunger, and means engaging with the outer end of thecylinder and with said resisting plug to hold said plug out in thecylinder regardless of the pressure in the pressure chamber, said meansengaging with said shear bar to prevent endwise displacement of the barfrom the cylinder and resisting plug, the walls of said cylinder at theopposite sides having openings transversely thercthrough, and saidresisting plug having an opening transversely through it, and said shearbar extending through said openings in said walls and said plug, thedimensions of said openings in said walls and said plug in the directionof shear being greater than the corresponding dimension of said shearbar.

15. In a device of the character described, in combination with a frame,a journal-box movable and guided in said frame, a cap fixed to saidframe across said journal-box and having a cylinder therein in fixedrelation thereto, with its axis substantially parallel to the directionof guiding of said journal-box, a plunger in said cylinder, and meanswhereby said plunger resists movement of said journal-box, a resistingplug in said cylinder, said plunger and said resisting plug and thewalls of the cylinder inclosing a pressure chamber, and said pressurechamber having an inlet, and means slidable transversely of saidcylinder and in en agement with said resisting plug, to hold the plugtoward said plunger.

16. In a device of the cha "actor described, in combination with aframe, a journal-box movable and guided in said frame, a cap fixed tosaid frame across said journal-box, and having a cylinder therein infixed relation thereto with its axis substantially parallel to thedirection of guiding of said journail-box, a plunger in said cylinder,and means whereby said plunger resists movement of said journal-box, aresisting plug entirely contained within said cylinder, said plunger andsaid resisting plug and the walls 01' the cylinder inclosing a pressurechamber, and said pressure chamber having an inlet, and means slidabletransversely of said cylinder and in engagement with said resistingplug, to hold the plug toward said plunger.

17 In a device of the character described, in combination with a frame,a journal-box movable and guided in said frame, a cap fixed to saidframe across said journal-box and having a cylinder integrally formedtherein, whereby it its fixed with its axis substantially parallelto thedirection of guiding of said journa-Lbox, a plunger in said cylinder,and means whereby said plunger resists movement of said journalbox, aresisting plug in said cylinder, said plunger and said resisting plugand the walls of the cylinder inclosing a. pressure chamber, and saidpressure chamber having an inlet, and a shear bar slidable transverselythrough opposite walls of said cylinder from the outside of said cap andthrough and in engagement with said resisting plug, to hold the plugtoward said plunger.

18. In a device of the character described, in combination with acylinder and a plunger therein, a resisting plug in said cylinderinclosing between plunger and the walls of the cylinder a pressurechamber, said cylinder having a fluid pressure inlet to said pressurechamber, a shear bar engaging with the walls of the cylinder andextending across and engaging with said resisting plug to hold it towardsaid plunger, and means engaging with the outer end of the cylinder andwith said re sisting plug. to hold said plug out in the cylinderregardless of the pressure in the pressure chamber, said means engagingwith said shear bar to prevent endwise displacement of the bar from thecylinder and resisting plug, the walls of said cylinder at the oppositesides having openings transversely therethrough, and said resisting plughaving an opening transversely through it, and said shear bar extendingthrough said openings in said walls and said plug, the dimensions ofsaid openings in said walls and said plug in the direction it and said iof shear being greater than the correspond ing dimension of said shearbar, and means supported at the outer end ofthe cylinder and extendingin and engaging with said resisting plug to hold it out in the cylinderwith the inner side of its transverse open- 7 mg against the inner sideof the shear bar, and thus hold the shear bar out with its outer sidesengaging withthe outer sides of the transverse openings in the cylinderwalls, said resisting plug and said shear bar being thus held togetherand the shear bar being thus held in the walls of the cylinder,regardless of the fluid pressure on said resisting plu 19. In a deviceof the character described, a cylinder having a bore comprising an outermain part of greater diameter and an inner part of less diameter with anannular shoulder formed therein, a plunger fitting in the part of lessdiameter with a shoulder to rest on the shoulder in the cylinder, andwith a part projecting into the main part of the bore, packing meansaround this projecting part of the plunger and between this part and theWall of the cylinder, a resisting plug fitting in the outer main part ofthe bore, said plunger, said plug, and the walls of the cylinderinclosing a pressure chamber, and said pressure chamber having an inlet,and a shear bar extending across the bore of the cylinder and into thewalls of the cylinder and engaging across said resisting plug.

20. In a device of the character described, a cylinder having a borecompris ing an inner part of less diameter and an outer main part ofgreater diameter, a plunger fitting in the part of less diameter butprojecting into the main part of the bore, packing means around thisprojecting part of the plunger and between this part and the wall of thecylinder, a resisting plug comprising an outer main part fitting in theouter main part of the bore and having an inner part of less diameterthan that of the bore, packing means around this part of less diameter,between it and the walls of the cylinder, and a shear bar extendingacross the bore of the cylinder and into the walls of the cylinder andengaging across said resisting plug, and means engaging with the outerend of the cylinder and with said resisting plug to hold said plug outin the cylinder regardless of the pressure in the pressure chamber, saidmeans engaging with said shear bar to prevent endwise displacement ofthe bar from the cylinder and resisting plug, the walls of said cylinderat the opposite sides having openings transversely therethrough, andsaid resisting plug having an opening transversely through it, and saidshear bar extending through said openings in said walls and said Copiesof this patent may be obtained for til plug, the dimensions oi saidopenings in said walls and said plug in the direction of shear beinggreater than the corresponding dimension of said shear bar.

21. In a device of the character described, a cylinder having a borecomprisingan inner part of less diameter and an outer main part ofgreater diameter, a plunger fitting in the part of less diameter butprojecting into the main part of the bore, packing means around thisprojecting part of the plunger and between this part and the wall of thecylinder, a resisting plug comprising an outer main part fitting in theouter main part of the bore and having an inner part of less diameterthan that of the bore, packing means around this part of less diameter,between it and the walls of the cylinder, and a shear bar extendingacross the bore of the cylinder and into the walls of the cylinder andengaging across said resisting plug, and means engaging with the outerend of the cylinder and with said resisting plug to hold said plug outin the cylinder regardless of the pressure in the pressure chamber, saidmeans engaging with said shear bar to prevent endwise displacement or"the bar from the cylinder and resisting plug, the walls of said cylinderat the opposite sides having openings transversely therethrough, andsaid resisting plug having an opening transversely through it, and saidshear bar extending through said openings in said walls and said plug,the dimensions of said openings in said walls and said plug in thedirection of shear being greater than the corresponding dimension orsaid shear bar, and means supported at the outer end of the cylinder andextending in and engaging with said resisting plug to hold it out in thecylinder with the inner side of its transverse opening against the innerside of the shear bar, and thus hold the shear bar out with its outersides engaging with the outer sides of the transverse openings in thecylinder walls, said resisting plug and said shear bar being thus heldtogether and the shear bar being thus held in the walls of the cylinder,regardless of the fluid pressure on said resisting plugs.

CLIFFORD E. "WENTZEL.

IVitnesses:

JAMES N. RAMsnY, CLARENCE Pnnnnw.

five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

